<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>22_函数的参数用法</title>
  </head>
  <body>
    <script>
      function test(a, b, c, ...args) {
        // console.log(args)
        var a = arguments; // a类数组

        //    console.log(Array.from(a))

        // call/apply 改变this指向的方法
        // class extends
        //
        //   console.log(Array.prototype.slice.call(a))
        //    console.log(Array.prototype.slice.apply(a))
        //   console.log(a,b,c)
        console.log([...a])
      }
      const test1 = () => {};
      test(1, 2, 3, 4, 5, 6, 7, 8, 9, 10);
    </script>
  </body>
</html>
